JPS6314162B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to a lubricating oil filter used in a lubricating oil filter device having a bypass flow control type regulator valve.

The lubricating oil filter device consists of a lubricating oil filter, a bypass filter, an oil pump, a regulator valve, a main gear gallery, an oil pan, and a conduit connecting these. A conventionally used lubricating oil filter device connects an oil pump 1, a lubricating oil filter 10, and a main gear rally 3 in series through conduits 4 and 5, as shown in FIG. The main gear rally 3 and the oil pan 6 are communicated with each other through conduits 7 and 8, and a bypass filter 9 is provided between the oil pan 6 and the conduit 4 between the oil pump 1 and the lubricating oil filter 10. A regulator valve 2 is provided between a conduit 5 between a filter 10 and a main gear rally 3 and an oil pan 6.

The oil in the oil pan 6 is sucked up by the oil pump 1 and flows into the lubricating oil filter 10.
and is supplied to the main gear rally 3. At the same time, a portion of the oil sucked up is constantly returned to the oil pan 6 through the bypass filter 9.
When the pressure of the oil supplied to the main gear rally 3 rises above a predetermined value, the regulator valve 10
opens the valve and returns some of the oil to oil pan 6.
Reduce pressure.

In such a conventional lubricating oil filter device, a regulator valve 2 is provided between the lubricating oil filter 10 and the main gear rally 3, and detects the oil pressure of the leaked oil, and if it exceeds a predetermined value, the regulator valve 2 is installed between the lubricating oil filter 10 and the main gear rally 3. Since this passed oil is returned to the oil pan 6, the oil that is not supplied to the main gear rally 3 is passed through the lubricating oil filter 10, which places an excessive burden on the filter. Also, some of the oil is always passed through the bypass filter 9.
This causes a problem in that when it is necessary to supply a sufficient amount of oil to the main gear rally, such as at the beginning of engine startup, the purpose cannot be achieved.

In order to solve such problems, the present inventor connected the oil pan 6 and the inlet side of the lubricating oil filter 10 via the oil pump 1, as shown in FIG. is connected to the inlet side of the bypass filter 9 and communicated with the oil pan 6 via the regulator valve 2, and the outlet side of the bypass filter 9 is communicated with the oil pan 6 via the regulator valve 2, so that lubricating oil The outlet side of the filter 10 is connected to the main gear rally 3, and when the oil pressure is high, the oil from the bypass filter 9 and the unpurified oil from the oil pump 1 are bypassed simultaneously, and when the oil pressure is low, the oil from the bypass filter 9 and the unpurified oil from the oil pump 1 are bypassed at the same time. proposed a lubricating oil filter device in which the supply to the bypass filter 9 is stopped and the entire amount of oil is supplied to the main gear rally 3.

However, on the other hand, such a lubricating oil filter device has an increased number of conduits, and the conventional lubricating oil filter, that is, a structure in which an overbody is disposed in a case having an inlet and an outlet, is used in this device. If used, the piping becomes complicated, requiring time and effort to connect, and flow path resistance increases.

Accordingly, the present invention provides a regulator valve and a flow path for bypassing the inflow oil in the body in which the filter element is placed.
By integrally forming a flow path for guiding this bypass flow to the bypass filter, the pipe line is simplified and flow path resistance is reduced while providing the desired bypass function.

To explain by way of example, FIG. 2 shows a lubricating oil filter 10 of the present invention, which comprises a regulator valve 20, a body 21, a casing 22, and a filter element 23. The body 21 has a boss portion 25 with a threaded groove 24 in the center, a first annular wall 26 on its outer periphery, and a second annular wall 27 on its outer periphery. First and second annular chambers 28 and 29 are formed between the boss portion 25 and the first annular wall 26 and between the first annular wall 26 and the second annular wall 27, respectively. The first annular chamber 28 communicates with the main gear rally 5 through an outflow opening 30, and the second annular chamber 29 has a
It communicates with the oil pump 2 via an inflow opening 31 .
Furthermore, the first and second annular chambers 28 and 29 have first and second annular chamber openings 3 that open into a valve chamber 36, which will be described later.
2 and 33 are formed respectively. The body 21 is provided with a valve chamber 36 having a bypass outlet 34 and a bypass inlet 35, and the regulator valve 20 is provided within the chamber 36. valve 20
consists of a valve body 37, a spring 38, a spring guide 39 and a snap spring 40.
The valve body 37 has a substantially cylindrical shape with one end open and the other end closed, and has a first side hole 41 and a second side hole 42 on the outside of the valve body 37 . A snap spring 4 fixed to the bypass outlet 34 side of the valve chamber 36
0. A spring 38 is provided between the spring guide 39 and the open end of the valve body 37, and the valve body 37 is inserted into the valve chamber 36. The outer periphery of the valve body 37 and the inner periphery of the valve chamber 36 are in close contact with each other, and the valve body 37 slides within the valve chamber 36 . The second annular chamber opening 33, the valve body 37, and the bypass inlet 3
5 and the valve body 37, respectively, form first and second valves, and as the valve body 37 moves to the left, the second annular chamber 29 and the inside of the valve chamber 36, and the bypass inlet 35 and the inside of the valve chamber 36 communicate with each other. . The first annular chamber opening 32 is closed by the closed end of the valve body 37 .

A filter element 23 folded into a chrysanthemum shape is placed on a first annular wall 26 of the body 21, and a casing 22 is placed on a second annular wall 27. The filter element 23 in the casing 22 is connected to the center bolt 4 via a spring 43.
4, and the tip of the center bolt is screwed into the thread groove 24 of the boss portion 25 of the body 21. 45 and 46 are outer and inner circumferential packings.

The lubricating oil filter 10 having the above structure is arranged as a lubricating oil filter device as shown in FIG. That is, the lubricating oil filter 10 has its inlet side (inflow opening 31) communicating with the oil pan 6 through the conduit 4 and conduit 16 from the oil pump 1, and its outlet side (outflow opening 30) communicating with the oil pan 6 through the conduit 5 and the main gear rally 3. ,
It communicates with the oil pan 6 via a conduit 25. Also,
The inlet side of the lubricating oil filter 10 is connected to the inlet side (bypass inlet 35) of the regulator valves 2, 20 by a conduit 19 via the conduit 7 and the bypass filter 9, and the outlet of the regulator valves 2, 20 The side (bypass outlet 34) is connected to the oil pan 6 by a conduit 23. The conduit 22 is a conduit that connects the inlet side of the lubricating oil filter 10 to the oil pan 6 via the regulator valves 2 and 20. A conduit 26 is provided between the upstream side of the main gear rally 3 and the regulators 2, 20, but a flow path in the body 21 of the lubricating oil filter 10 is used as a substitute for this.

1 and 2, oil is introduced into the second annular wall 29 by the pump 1 through the inlet opening 31 of the body 21 of the lubricating oil filter 10. In FIGS. The introduced oil passes through the filter element 23 and is sent from the outflow opening 30 of the first annular chamber 28 via the conduit 5 to the main gear rally 3, and further returns to the oil pan 6 via the conduit 25. The oil is cleaned while passing through the filter element 23. A portion of the oil introduced into the second annular chamber 29 passes through the opening 47 via the conduit 7 to the bypass filter 9, and further passes through the conduit 19 to the lubricating oil filter 1.
0 regulator valve 20 bypass inlet 3
5. At this time, when the regulator valve 20 is in the closed state, that is, in the state shown in FIG. 2, the flow of oil is blocked. Therefore, when the regulator valve 20 is closed, all the oil from the oil pump 1 is supplied to the main gear rally 3.

When oil pressure of a predetermined value or higher is applied to the closed end of the valve body 37 of the regulator valve 20 from the first annular chamber opening 32 of the first annular wall 28, such as when the oil viscosity is high, the valve body 37 moves to the left against the elasticity of
The first and second valves, respectively, are opened. When the first and second valves are opened, the unpurified oil, that is, the oil in the second annular chamber 29 and the oil that has passed through the bypass filter 9 are removed from the first and second side holes 41 of the valve body 37, Through 42,
It enters the valve chamber 36 and is bypassed to the oil pan 6 from the bypass outlet 34.

The regulator valve 20 is integrated into the body 21, and there is no need to provide it in the middle of the conduit. Similarly, a first annular chamber 28 for applying hydraulic pressure to the regulator valve 20 and a flow path for bypassing oil and guiding it to a bypass filter are integrally provided in the body 21, and conduits are necessary for these. becomes unnecessary.

As described above, in the lubricating oil filter of the present invention, the regulator valve and the flow path for operating the regulator valve are integrally formed in the mounting body of the casing, and the lubricating oil filter of the present invention can be used without the need for a complicated pipe line. To provide the desired bypass effect of supplying sufficient oil when necessary without placing a burden on the oil filter.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a lubricating oil filter device, Fig. 2 is a sectional view of the lubricating oil filter of the present invention, and Fig. 3 is a diagram showing a lubricating oil filter device.
The figure shows a cross-sectional view of a conventional lubricating oil filter device. DESCRIPTION OF SYMBOLS 10...Lubricating oil filter, 20...Regulator valve, 21...Body, 22...Casing, 23...
filter element.

Claims (1)

[Claims] 1. A boss portion having a screw groove in the center is provided, a first annular wall is provided on the outer periphery of the boss portion, and a second annular wall is further provided on the outer periphery of the boss portion, and a portion between the boss portion and the first annular wall and the first annular wall is provided.
The annular wall has first and second annular chambers between the annular wall and the second annular wall, and has a valve chamber provided with a bypass inlet and a bypass outlet;
A substantially cylindrical valve body communicating with the annular chamber and having first and second side holes in the valve chamber, one end open, the inside communicating with the bypass outlet, and the other end closed, and a spring guide. A regulator valve is provided, in which a spring is compressed between the outer circumference of the valve body and the snap spring, and first and second valves are formed between the outer circumference of the valve body and a second annular chamber, and between the outer circumference of the valve body and a bypass inlet. When the pressure in the first annular chamber reaches a predetermined level or higher, the first and second valves open to communicate the second annular chamber and the bypass inlet via the first and second side holes. The body of
A filter element is placed on the first annular wall, a casing is placed on the second annular wall, and is fixed with a center bolt, and the outside of the filter element is communicated with the second annular chamber. A lubricating oil filter for an internal combustion engine, the inside of which communicates with a first annular chamber.